Journal
APPLIED PHYSICS LETTERS
Volume 98, Issue 7, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.3554387
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- U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences [DE-AC02-06CH11357]
- Division of Materials Science, DOE BES
- U.S. DOE [DE-FG02-07ER46453, DE-FG02-07ER46471]
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Epitaxial La1-xSrxMnO3 center dot SrO (x=1/3) films were synthesized as random alloys and cation-ordered analogs to probe how cation ordering affects the properties of a two dimensional manganite. The films show evidence for a spin glass like phase below 20 K and weak ferromagnetic ordering up to 130 K. There is a dramatic difference in magnetic anisotropy and the low temperature transport mechanism depending on the cation order, which is consistent with differences in Mn 3d orbital occupancies. This work indicates that cation ordering can significantly alter the Mn 3d orbital ground state in these correlated electron systems. (C) 2011 American Institute of Physics. [doi:10.1063/1.3554387]
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